101 lines
2.5 KiB
Rust
101 lines
2.5 KiB
Rust
use bevy::{
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input::{
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keyboard::KeyboardInput,
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mouse::{MouseButtonInput, MouseMotion, MouseWheel},
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},
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prelude::*,
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};
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fn main() {
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App::build()
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.add_resource(WindowDescriptor {
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width: 300,
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height: 300,
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..Default::default()
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})
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.add_plugins(DefaultPlugins)
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// One time greet
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.add_startup_system(hello_wasm_system)
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// Track ticks (sanity check, whether game loop is running)
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.add_system(counter)
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// Track input events
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.init_resource::<TrackInputState>()
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.add_system(track_input_events)
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.run();
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}
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fn hello_wasm_system() {
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info!("hello wasm");
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}
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fn counter(mut state: Local<CounterState>, time: Res<Time>) {
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if state.count % 60 == 0 {
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info!(
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"tick {} @ {:?} [Δ{}]",
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state.count,
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time.time_since_startup(),
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time.delta_seconds
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);
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}
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state.count += 1;
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}
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#[derive(Default)]
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struct CounterState {
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count: u32,
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}
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#[derive(Default)]
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struct TrackInputState {
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keys: EventReader<KeyboardInput>,
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cursor: EventReader<CursorMoved>,
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motion: EventReader<MouseMotion>,
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mousebtn: EventReader<MouseButtonInput>,
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scroll: EventReader<MouseWheel>,
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}
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fn track_input_events(
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mut state: ResMut<TrackInputState>,
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ev_keys: Res<Events<KeyboardInput>>,
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ev_cursor: Res<Events<CursorMoved>>,
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ev_motion: Res<Events<MouseMotion>>,
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ev_mousebtn: Res<Events<MouseButtonInput>>,
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ev_scroll: Res<Events<MouseWheel>>,
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) {
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// Keyboard input
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for ev in state.keys.iter(&ev_keys) {
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if ev.state.is_pressed() {
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info!("Just pressed key: {:?}", ev.key_code);
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} else {
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info!("Just released key: {:?}", ev.key_code);
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}
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}
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// Absolute cursor position (in window coordinates)
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for ev in state.cursor.iter(&ev_cursor) {
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info!("Cursor at: {}", ev.position);
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}
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// Relative mouse motion
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for ev in state.motion.iter(&ev_motion) {
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info!("Mouse moved {} pixels", ev.delta);
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}
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// Mouse buttons
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for ev in state.mousebtn.iter(&ev_mousebtn) {
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if ev.state.is_pressed() {
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info!("Just pressed mouse button: {:?}", ev.button);
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} else {
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info!("Just released mouse button: {:?}", ev.button);
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}
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}
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// scrolling (mouse wheel, touchpad, etc.)
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for ev in state.scroll.iter(&ev_scroll) {
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info!(
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"Scrolled vertically by {} and horizontally by {}.",
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ev.y, ev.x
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);
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}
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}
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